However, the DNA that makes up chromosomes becomes more tightly packed during cell division and is then visible under a microscope. Most of what researchers know about chromosomes was learned by observing chromosomes during cell division.
From a career standpoint, the term âbiologistâ can have many meanings. As a biologist, you might study plants, animals, people or a particular environment. You could work in marine biology, wildlife biology or biochemistry, travel to the Brazilian rain forest to study biological compounds or work in a clinical laboratory as a microbiologist.
Marine biologists need at least a bachelor's degree in marine biology, and many continue on to receive master's and doctoral degrees in marine biology, according to the Bureau of Labor Statistics. Marine biologists spend many hours in oceans, lakes and rivers studying plants and animals, in addition to the time spent in the classroom learning about the sciences applicable to marine biology.